The Qing dynasty’s legal system takes after the Ming’s as it is featured with "Lv-Ling" replacement of "Dian-li".In such a system,the Author argues,that Hui Dian is the fundamental law,taking a pivotal status as yard of measurement.Among historical archives,it has been discovered that plenty of them are concerned with Hui Dan’s promulgation,queries,explanation,revision,addition,reversion of dormant clauses,together with records involving punitive actions against deeds of its violation.It proves that Hui Dian is not a compilation of lawful regulations,but a fundamental law of Qing Dynasty in practice.The notions that categorize Hui Dian as a record book of history,a guideline of politics,a code of administration,a combination of administrative law plus fundamental law,or a comprehensive compilation of laws all underestimate significance of Hui Dian in its legal system.Actually,in such a system,Hui Dian plays the role of "head rope" while the decrees are the "meshes"(as when the head rope of a fishing net is pulled up,all its meshes open).This means the latter is subordinate to the former,and is in no way to oppose the former.In Kangxi and Yongzheng dynasties,Da Qing Lv was annexed to Hu Dian and in Jiaqing and Guangxu dynasties,Da Qing Lv Li was also enlisted in the Hui Dian Shi Li as a part of Hu Dian.These facts show that in Qing Dynasty,the status of "Lv" had experienced a dramatic decline.As the Paper reveals, "Lv-Li" only constitutes the criminal law part in "Dian-Li",hence it cannot reflect characteristics of Qing’s legal system in full scale.